Solar electric propulsion (SEP) and laser electric propulsion (LEP) was compared. The LEP system configuration consists of an 80 kW visible laser source on earth, transmitting via an 8 m diameter adaptively controlled phased array through the atmosphere to a 4 m diameter synchronous relay mirror that tracks the LEP spacecraft. The only significant change in the SEP spacecraft for an LEP mission is the replacement of the two 3.7 m by 33.5 m solar cell arrays with a single 8 m diameter laser photovoltaic array. The solar cell array weight is decreased from 320 kg to 120 kg for an increase in payload of 200 kg and a decrease in specific mass of the power system from 20.5 kg/kW to 7.8 kg/kW.


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    Titel :

    Advanced Propulsion Concepts Study: Comparative Study of Solar Electric Propulsion and Laser Electric Propulsion


    Beteiligte:
    R. L. Forward (Autor:in)

    Erscheinungsdatum :

    1975


    Format / Umfang :

    83 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch